package com.dyz.leetcode;

public class TreeNode {
       public int val;
       public TreeNode left;
       public TreeNode right;
       public TreeNode() {}
       public TreeNode(int val) { this.val = val; }
       public TreeNode(int val, TreeNode left, TreeNode right) {
           this.val = val;
           this.left = left;
           this.right = right;
       }
}
